Course: Introduction to Encryption and Cryptography

In the previous couple of steps, you used a basic substitution cipher and saw how simplicity makes such schemes trivial to crack. You are now going to explore how encryption …

In this step, you will learn about the evolution of this type of encryption, from 60 BCE to the Second World War. Encryption techniques and other tools for sending secret …

In this step you will learn about the strongest encryption scheme, the one-time pad (or OTP, as implemented by the Vernam cipher), and its limitations. Computationally secure Last week we …

A key application of encryption is network security. In this step you will learn several of the roles that encryption plays in a secure network. Networks that handle data are …

Modern encryption techniques can broadly be sorted into two categories: symmetric encryption and asymmetric encryption. In this step, you will learn about these two types of encryption and how they …

In this step we will look at the Vigenère cipher. As you learned a few steps ago, the Vigenère cipher is a polyalphabetic cipher from the 16th century. It uses …

In this step you will learn about several of the main concepts in the encryption process, as well as some important terms. As you have already seen, an encryption scheme …

In this step you will learn what encryption is and how it can be used. The definition of encryption Encryption is a process that transforms data into something that appears …